From 60b7c2aaefebe2ea6819414ebaf6e374031fc76d Mon Sep 17 00:00:00 2001
From: Amanieu d'Antras <amanieu@gmail.com>
Date: Fri, 21 Aug 2020 18:42:06 +0100
Subject: [PATCH] More inline asm register name fixups for LLVM

Fixes #75761
---
 src/librustc_codegen_llvm/asm.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/librustc_codegen_llvm/asm.rs b/src/librustc_codegen_llvm/asm.rs
index a6062de6bf8..4fef94dde5f 100644
--- a/src/librustc_codegen_llvm/asm.rs
+++ b/src/librustc_codegen_llvm/asm.rs
@@ -479,10 +479,13 @@ fn reg_to_llvm(reg: InlineAsmRegOrRegClass, layout: Option<&TyAndLayout<'tcx>>)
                         _ => unreachable!(),
                     }
                 } else {
-                    // We use i32 as the type for discarded outputs
-                    's'
+                    // We use i64x2 as the type for discarded outputs
+                    'q'
                 };
                 format!("{{{}{}}}", class, idx)
+            } else if reg == InlineAsmReg::AArch64(AArch64InlineAsmReg::x30) {
+                // LLVM doesn't recognize x30
+                "lr".to_string()
             } else {
                 format!("{{{}}}", reg.name())
             }